(ProQuest: ... denotes non-US-ASCII text omitted.)Japan's role in the peace process in Cambodia is generally considered to have been a success. It was the first major post-World War II effort by Japan to participate in bringing about peace to an international conflict. There have been later efforts on the part of Japan to participate in peacemaking and peace building, but none have been as impressive-nor featuring Japan in such a leading role-as was the case in Cambodia.1)In this paper, the focus is on the period immediately after the Paris Conference on Cambodia of 1991. This was when the government of Japan took the initiative to resolve the deadlock brought about by the refusal of the Khmer Rouge to go into the second phase of the peace process as prescribed in the Paris Peace Agreements. This move on the part of the Khmer Rouge posed a severe threat to the holding of elections to establish the Constituent Assembly, which was designed to approve the new Cambodian Constitution and then turn itself into a legislative assembly. The efforts on the part of Japan, including dialogues with the Khmer Rouge conducted together with Thailand, paved the way for the elections to be implemented as envisaged in the Paris Peace Agreements. The government of Japan also played an important role in the UN Security Council in this process.The Constituent Assembly elections gave two major rival political factions in Cambodia an almost equal number of seats. The results could have led to a political stalemate or even a clash between the two factions. The government of Japan moved quickly to support Prince Sihanouk, who came up with the idea of a coalition government in order to avert a political crisis.The author, as one of the participants in the process in the years 1992-94, would like to discuss the conditions that made it possible for Japan to take on such a political mediating role and why it was effective.Let us first remind ourselves of the major events in the peace process, which is now a part of history.I Course of Events2)(1) Paris Peace AgreementsThe Agreements on the Comprehensive Settlement of the Cambodian Conflict, otherwise known as the Paris Peace Agreements, were signed in Paris in October 1991. The Agreements chartered, step by step, the course for establishing a democratically elected government in Cambodia, a country that had been battered by conflict for 13 years. The Paris Peace Agreements were a crystallization into a concrete road map for peace of the efforts of all the major powers and neighboring countries seeking to bring peace to Cambodia, and which all the Cambodian parties to the conflict accepted. Because of the comprehensiveness of the content and because of the universality of acceptance, the Paris Peace Agreements were an unwavering solid guideline for actions throughout the peace process.Peace settlements require opportune moments. In the case of Cambodia, the moment came in the late 1980s. The conflict in Cambodia reflected the hostility between China and Vietnam. These two countries even fought a war over Cambodia in February- March 1979. The Cambodian People's Party (CPP), or the Phnom Penh regime, had the strong support of Vietnam; and the three other factions, particularly the Khmer Rouge, had the support of China. What made the two countries change their positions, which led to the normalization of their relationship in 1990?For Vietnam, the decline of military and economic assistance from the Soviet Union was a serious blow, particularly in maintaining its support and presence in Cambodia. It was also clear that without resolving the Cambodian conflict, assistance from the West to replace the assistance from the Soviet Union was just a dream. Vietnam's new policy of Doi Moi, which was adopted in 1986 and called for the introduction of a market economy and promotion of international cooperation (with the West), required a fundamental review of its external policy. …